EP0790534A3 - Device for detecting the optical density of an original and copying machine using the same - Google Patents
Device for detecting the optical density of an original and copying machine using the same Download PDFInfo
- Publication number
- EP0790534A3 EP0790534A3 EP97102338A EP97102338A EP0790534A3 EP 0790534 A3 EP0790534 A3 EP 0790534A3 EP 97102338 A EP97102338 A EP 97102338A EP 97102338 A EP97102338 A EP 97102338A EP 0790534 A3 EP0790534 A3 EP 0790534A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- original
- detecting
- light
- same
- copying machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title 1
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 238000001579 optical reflectometry Methods 0.000 abstract 2
- TXVWTOBHDDIASC-UHFFFAOYSA-N 1,2-diphenylethene-1,2-diamine Chemical compound C=1C=CC=CC=1C(N)=C(N)C1=CC=CC=C1 TXVWTOBHDDIASC-UHFFFAOYSA-N 0.000 abstract 1
- YQGOJNYOYNNSMM-UHFFFAOYSA-N eosin Chemical compound [Na+].OC(=O)C1=CC=CC=C1C1=C2C=C(Br)C(=O)C(Br)=C2OC2=C(Br)C(O)=C(Br)C=C21 YQGOJNYOYNNSMM-UHFFFAOYSA-N 0.000 abstract 1
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 abstract 1
- 239000007850 fluorescent dye Substances 0.000 abstract 1
- 238000002310 reflectometry Methods 0.000 abstract 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 abstract 1
- 229940043267 rhodamine b Drugs 0.000 abstract 1
- JADVWWSKYZXRGX-UHFFFAOYSA-M thioflavine T Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C1=[N+](C)C2=CC=C(C)C=C2S1 JADVWWSKYZXRGX-UHFFFAOYSA-M 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5025—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the original characteristics, e.g. contrast, density
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/86—Investigating moving sheets
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54273/96 | 1996-02-15 | ||
JP5427396 | 1996-02-15 | ||
JP8054273A JPH09224127A (en) | 1996-02-15 | 1996-02-15 | Original density detector |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0790534A2 EP0790534A2 (en) | 1997-08-20 |
EP0790534A3 true EP0790534A3 (en) | 1999-01-27 |
EP0790534B1 EP0790534B1 (en) | 2002-08-28 |
Family
ID=12965977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97102338A Expired - Lifetime EP0790534B1 (en) | 1996-02-15 | 1997-02-13 | Device for detecting the optical density of an original and copying machine using the same |
Country Status (4)
Country | Link |
---|---|
US (1) | US5754921A (en) |
EP (1) | EP0790534B1 (en) |
JP (1) | JPH09224127A (en) |
DE (1) | DE69714883T2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11112735A (en) * | 1997-09-30 | 1999-04-23 | Fujitsu Ltd | Picture reader |
IT1316145B1 (en) * | 2000-10-26 | 2003-03-28 | Viptronic Srl | PHOTOELECTRIC MEASUREMENT DEVICE EQUIPPED WITH A DIPOLARIZATION FILTER. |
US7058350B2 (en) * | 2002-01-16 | 2006-06-06 | Xerox Corporation | Copier or scanner platen cover with fluorescent coating |
JP2012123003A (en) * | 2004-12-20 | 2012-06-28 | Canon Inc | Sensor system and image forming apparatus |
JP4655114B2 (en) * | 2008-06-19 | 2011-03-23 | コニカミノルタビジネステクノロジーズ株式会社 | Image reading apparatus and image forming apparatus |
CN110763657B (en) * | 2019-11-20 | 2022-05-13 | 江苏赛诺格兰医疗科技有限公司 | Photoelectric digital conversion system for reflective material reflectivity test system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4200391A (en) * | 1977-08-26 | 1980-04-29 | Ricoh Company, Ltd. | Electrostatographic apparatus comprising document density sensing means |
US4811056A (en) * | 1986-09-30 | 1989-03-07 | Kabushiki Kaisha Toshiba | Image forming apparatus capable of detecting original-image density |
US5282000A (en) * | 1990-03-05 | 1994-01-25 | Canon Kabushiki Kaisha | Image processing apparatus having an original feed device with two density detectors |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0627779A (en) * | 1992-03-19 | 1994-02-04 | Matsushita Electric Ind Co Ltd | Image forming device |
-
1996
- 1996-02-15 JP JP8054273A patent/JPH09224127A/en active Pending
-
1997
- 1997-02-10 US US08/798,175 patent/US5754921A/en not_active Expired - Fee Related
- 1997-02-13 EP EP97102338A patent/EP0790534B1/en not_active Expired - Lifetime
- 1997-02-13 DE DE69714883T patent/DE69714883T2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4200391A (en) * | 1977-08-26 | 1980-04-29 | Ricoh Company, Ltd. | Electrostatographic apparatus comprising document density sensing means |
US4811056A (en) * | 1986-09-30 | 1989-03-07 | Kabushiki Kaisha Toshiba | Image forming apparatus capable of detecting original-image density |
US5282000A (en) * | 1990-03-05 | 1994-01-25 | Canon Kabushiki Kaisha | Image processing apparatus having an original feed device with two density detectors |
Also Published As
Publication number | Publication date |
---|---|
DE69714883D1 (en) | 2002-10-02 |
EP0790534B1 (en) | 2002-08-28 |
DE69714883T2 (en) | 2003-04-10 |
JPH09224127A (en) | 1997-08-26 |
US5754921A (en) | 1998-05-19 |
EP0790534A2 (en) | 1997-08-20 |
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